Yes, you can refer to mock tests and sample papers for the law optional subject exam preparation. Here are the reasons why:

1. Familiarizing yourself with the exam pattern and question types:
- Mock tests and sample papers provide you with an opportunity to understand the exam pattern, types of questions, and the overall structure of the exam.
- By solving these papers, you can get a sense of the time required to answer each question and develop an effective strategy to manage your time during the actual exam.

2. Assessing your knowledge and identifying weak areas:
- Mock tests and sample papers help you evaluate your level of understanding and knowledge in different topics of the law optional subject.
- By analyzing your performance in these tests, you can identify your strengths and weaknesses.
- This allows you to focus on areas where you need improvement and allocate your study time accordingly.

3. Practicing time management and improving speed:
- Solving mock tests and sample papers under timed conditions helps you improve your speed and accuracy in answering questions.
- It trains you to think quickly and efficiently, simulating the pressure of the actual exam.
- Regular practice with these papers can significantly enhance your time management skills, ensuring that you complete the exam within the given time frame.

4. Enhancing your problem-solving skills:
- Mock tests and sample papers often include complex legal scenarios and case studies, providing an opportunity to enhance your problem-solving skills.
- By analyzing and solving these problems, you can develop a better understanding of legal principles and their practical application.

5. Boosting confidence and reducing exam anxiety:
- Regular practice with mock tests and sample papers builds your confidence, as it familiarizes you with the exam format and helps you anticipate the types of questions that may appear.
- This confidence can help reduce exam anxiety and improve your overall performance in the law optional subject exam.

Conclusion:
- Referring to mock tests and sample papers is an effective strategy for law optional subject exam preparation.
- It helps you become familiar with the exam pattern, assess your knowledge, improve time management and problem-solving skills, and boosts your confidence.
- Regular practice with these papers can significantly enhance your chances of success in the exam.